PID letter code

2022-06-17View Original

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What does YC represent in a PID diagram? ?

Reply #22022-06-17

As for the legend, the image on the home page – it should show what different meanings the various letters represent in different order positions

Reply #32022-06-17

According to HG/T20505 2014, Y represents an event, and C represents control. PS stands for pressure switch; it generates a switching signal to YC when the pressure meets the specified conditions, enabling control based on pressure changes. PS refers to the pressure switch installed on-site, while YC refers to the SIS system in the central control room.

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PID letter code

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